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Virtual AGC Project

Archival-quality scans for the Virtual AGC Project, primarily original Apollo-era documentation about the Apollo Guidance Computer (AGC) and AGC software listings. At our main site, only non-archival versions of the items in this collection are provided.

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PART OF
American Libraries
Media Type
278
texts
Year
2
2003
1
1981
1
1973
14
1972
52
1971
78
1970
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Topics & Subjects
255
nasa
252
guidance
251
apollo
245
software
134
luminary
15
simulation
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Collection
Creator
39
mit instrumentation laboratory
34
don eyles
23
george w. cherry
22
d. densmore
20
craig schulenberg
12
dana densmore
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Language
278
English
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Title
Date Published
Creator
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 889
favorite 2
comment 0
Apollo Guidance Computer Lunar Module software for Apollo 11 mission.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 795
favorite 2
comment 0
Apollo Guidance Computer software for Lunar Module of Apollo 10 mission.
Topic: nasa, apollo, guidance, software, luminary
Source: folio
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 765
favorite 2
comment 0
Apollo Guidance Computer software for Lunar Module of Apollo 12 mission.
Topic: nasa, apollo, guidance, software, luminary
Source: folio
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 723
favorite 2
comment 0
Apollo Guidance Computer Command Module software for Apollo 11 mission.
Topics: nasa, apollo, guidance, software, colossus
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 670
favorite 1
comment 0
Apollo Guidance Computer Command Module software for Apollo 9 mission.
Topics: nasa, apollo, guidance, software, colossus
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 619
favorite 2
comment 0
Apollo Guidance Computer Command Module software for Apollo 15, 16, and 17 missions.
Topics: nasa, apollo, guidance, software, colossus
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 569
favorite 2
comment 0
Apollo Guidance Computer Command Module software for Apollo 8 mission.
Topics: nasa, apollo, guidance, software, colossus
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 537
favorite 2
comment 0
Apollo Guidance Computer software for unmanned Apollo 5 mission (AS506).
Topic: nasa, apollo, guidance, software
Source: folio
Virtual AGC Project
by Hugh Blair-Smith
texts
eye 509
favorite 2
comment 0
Software listing for YUL, the original Apollo-program software used for building the executable form of Apollo Guidance Computer Software from source code.
Topic: nasa, apollo, software
Source: folio
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 375
favorite 2
comment 0
Listing of software for Apollo Lunar Module guidance computer.  Precedes all flown missions, but is distinguished by the fact that it is the last AGC software that retains a full suite of self-test software, and is thus indispensable for validating software and hardware simulations of the guidance computer.
Topic: nasa, apollo, guidance, software, testing
Source: folio
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 367
favorite 2
comment 0
Apollo Guidance Computer software for the Lunar Module of Apollo 15, 16, and 17.
Topic: nasa, apollo, guidance, software, luminary
Source: folio
Virtual AGC Project
by AC Electronics
texts
eye 353
favorite 2
comment 0
Sponsored by Mike Stewart, Virtual AGC Project.
Source: folio
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 328
favorite 0
comment 0
Source: folio
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 320
favorite 2
comment 0
Apollo Guidance Computer software for Lunar Module of Apollo 13 mission.
Topic: nasa, apollo, guidance, software, luminary
Source: folio
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 315
favorite 2
comment 0
A digital simulation of the Apollo 17 lunar landing, made a week after the landing itself.  Such simulations might be made for the purpose of analyzing how closely the actual landing had conformed to what was expected theoretically.
Topic: nasa, apollo, guidance, software, testing
Source: folio
Virtual AGC Project
by Don Eyles
texts
eye 306
favorite 2
comment 0
Digital simulation of Apollo 11 lunar landing made by Apollo Guidance Computer developer in 1971 (after the 1969 landing itself) as part of the process of testing improved algorithms.  (The indication on the cover that it is a listing of the DIANA program is incorrect, and is simply due to the binder having been repurposed at some point.)
Topic: nasa, apollo, guidance, software, testing
Source: folio
Virtual AGC Project
by AC Electronics
texts
eye 284
favorite 1
comment 0
Source: folio
Virtual AGC Project
by Ron Burkey
texts
eye 265
favorite 0
comment 0
This is an inventory of all of the Apollo program related boxes I found at NARA Southwest (in Fort Worth) that contained paper documents, in December 2003, provided as scans of the title pages of the documents found in those boxes.  Omitted are the boxes in group E.209G ("MIT Technical Documents"), for which I prepared instead a compiled an index as a text file, and the boxes containing microfilm.
Topics: nasa, apollo
Virtual AGC Project
by Don Eyles
texts
eye 238
favorite 1
comment 0
Source: folio
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 231
favorite 1
comment 0
Source: folio
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 179
favorite 1
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This is a digital simulation of the Apollo 12 lunar landing, made a few months after the landing itself, for purposes unknown.
Topic: nasa, apollo, guidance, software, simulation
Source: folio
Virtual AGC Project
texts
eye 148
favorite 0
comment 0
Prepared for National Aeronautics and Space Administration Manned Spacecraft Center; NASA Contract NAS 9 -497; ND1021042
Topic: Space programs--American, Apollo (Spacecraft), NASA, AGC
Source: folio
Topics: Space programs--American, Apollo (Spacecraft), NASA, AGC
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 139
favorite 2
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Apollo Guidance Computer software, not used for any flown mission, though theoretically targeted for the Lunar Module.  As of February 2017, it is the oldest-known still-surviving AGC code.  At the time it was written in 1965, its purpose was to port AGC code written for the Command Module's early "Block I" AGC to the later-model "Block II" AGC used for the flown Lunar Module missions.
Topic: nasa, apollo, guidance, software
Source: folio
Virtual AGC Project
texts
eye 136
favorite 0
comment 0
Topic: Space programs--American, Apollo (Spacecraft), NASA, AGC
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 136
favorite 2
comment 0
Block I Apollo Guidance Computer software for unmanned Apollo 6 mission.
Topics: nasa, apollo, guidance, software
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 134
favorite 1
comment 0
This is a digital simulation of the Apollo 11 lunar landing, made in July 1969, shortly after the landing itself.    It has been speculated that this simulation was done in the course of investigating the 1201 and 1202 program alarms the astronauts had experienced during the actual landing.
Topic: nasa, apollo, guidance, software, simulation
Source: folio
Virtual AGC Project
texts
eye 130
favorite 0
comment 0
Apollo Guidance Computer software flowcharts for Apollo 14 Lunar Module.
Topics: apollo, nasa, guidance, software
Virtual AGC Project
by NASA MSC, Mission Planning and Analysis Division
texts
eye 120
favorite 0
comment 0
This is a pseudo-code description of the Artemis 72 AGC Command Module software used in Apollo 15-17.  It is intended, as the document itself says in its Abstract, "that it be used together with a symbolic tabulation of the program".
Topics: nasa, apollo, guidance, software
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 118
favorite 0
comment 0
Section 4 of Lunar Module GSOP for Apollo 15-17.
Topics: nasa, apollo, guidance, software
Virtual AGC Project
by Manned Spaceflight Center, Flight Software Branch
texts
eye 114
favorite 0
comment 0
Pseudocode description of AGC program Luminary 116.
Topics: apollo, nasa, guidance, software
Virtual AGC Project
texts
eye 113
favorite 0
comment 0
AGC software flowcharts for Apollo 14 Lunar Module.
Topics: apollo, nasa, guidance, software
Virtual AGC Project
texts
eye 102
favorite 0
comment 0
Comprehensive, user-oriented description of the Apollo guidance system, and specifically the guidance computer (AGC).  While it purports to be non-mission-specific, it relates to Colossus 3 and to Luminary 1E, and should therefore be accurate for Apollo 15, 16, and 17, which used the software in question.
Topics: apollo, nasa, guidance, software
Virtual AGC Project
by NASA
texts
eye 95
favorite 0
comment 0
Map of KSC from March 1972.
Topic: nasa
Virtual AGC Project
by NASA
texts
eye 74
favorite 0
comment 0
A map of Kennedy Space Center, from January 1981.
Topic: nasa
Virtual AGC Project
texts
eye 70
favorite 0
comment 0
Pseudocode description of Luminary 1C AGC programs (such as Luminary 131).
Topics: apollo, nasa, guidance, software
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 69
favorite 0
comment 0
Section 5 of Lunar Module GSOP for Apollo 15-17.
Topics: nasa, apollo, guidance, software
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 68
favorite 0
comment 0
Comprehensive, user-oriented description of the Apollo guidance system, and specifically the guidance computer (AGC).  While it is not mission-specific, it relates to the Apollo 13/14 time-frame, and therefore should be close to be accurate for those missions.
Topics: apollo, nasa, guidance, software
Virtual AGC Project
texts
eye 65
favorite 1
comment 0
Describes a conflict in multiplexing data from the rendezvous radar and data generated by routine R10 (Landing Analog Display Routine), and the precautions the crew must take to overcome this when using routine R29 (Powered Flight RR Designate).  It notes that the MIT Action is toe make sure that there's some statement put into the GSOP that the radar has to be turned off when R10 is activated.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
texts
eye 59
favorite 1
comment 0
Source: folio
Derives the three lag angles whose equations are list in GSOP R-557.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by Allan Klumpp, Bruce McCoy, and Don Eyles
texts
eye 51
favorite 0
comment 0
Describes a simple terrain model for the vicinity of the landing site, introduced for LUMINARY 1D (Apollo 14). 
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by Ron Burkey
texts
eye 51
favorite 0
comment 0
This is a textual index of the NARA Southwest (Ft. Worth) Apollo program box E.209G (MIT Instrumentation Laboratory documents), as of December 2003.
Topics: nasa, apollo, guidance
Virtual AGC Project
by Craig Schulenberg
texts
eye 48
favorite 1
comment 0
Describes the AGC software changes made in creating revisions 39-40 and 42-43 of the LUMINARY program.  (Revision 41 isn't listed.  Perhaps there wasn't one.)
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
texts
eye 47
favorite 0
comment 0
Scheduling info for ongoing or upcoming activities needed for LUMINARY and SUNDANCE AGC software development.
Topics: nasa, apollo, guidance, software, luminary, sundance
Virtual AGC Project
by Russell A. Larson
texts
eye 47
favorite 0
comment 0
A rough draft of program notes for LUMINARY 1C (Apollo 13).
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by GEMINI Systems Engineering Staff
texts
eye 45
favorite 0
comment 0
Report on preliminary studies on the simulation of GEMINI ascent guidance.
Topics: nasa, gemini, guidance, simulation
Virtual AGC Project
texts
eye 45
favorite 0
comment 0
Give a detailed analysis, along with background material needed to understand the analysis, of the program alarms that occurred during the Apollo 11 lunar landing
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
texts
eye 44
favorite 0
comment 0
Describes a change to Apollo 10 Lunar Module software (LUMINARY 69 → rev. 2), namely implementation of the Boeing R-2 lunar gravity model.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by James Kernan
texts
eye 44
favorite 1
comment 0
Describes AGC software changes incorporated into LUMINARY program revision 99.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
texts
eye 43
favorite 1
comment 0
Description of Kalman filtering techniques for rendezvous navigation problems (relative state of rendezvousing spacecraft), in the Apollo on-board navigation system.
Topics: nasa, apollo, guidance, rendezvous, theory
Virtual AGC Project
by MSC Flight Procedures Branch of the Flight Crew Support Division
texts
eye 41
favorite 1
comment 0
Documents Apollo program software for estimating relative states of two vehicles (CM and LM).
Topics: nasa, apollo, guidance, rendezvous, estimation
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 41
favorite 0
comment 0
Apollo-era digital simulation of Colossus 237, anomaly #45 (bailout during burn).
Topics: nasa, apollo, guidance, simulation
A compendium of information of compatibility testing between the AGC and RTCC (the Real Time Control Center in Houston).  This is also COLOSSUS Memo #210.
Topics: nasa, apollo, guidance, software, luminary, testing
Virtual AGC Project
texts
eye 39
favorite 0
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Requests starting work immediately on a program-change request which hasn't yet been approved.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by MIT Instrumentation Laboratory
texts
eye 38
favorite 0
comment 0
Section 2 of Lunar Module GSOP for Apollo 15-17
Topics: apollo, nasa, guidance, software
Virtual AGC Project
by Margaret Hamilton
texts
eye 37
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(This is also COLOSSUS Memo #326.)  This is a redistribution of two other memos, "Erasable Memory Program (EMP) Control Procedures" by K. W. Greene and "EMPs" by Margaret Hamilton, describing the contents and formats of erasable memory programs.
Topics: nasa, apollo, guidance, software
Virtual AGC Project
by James C. Pennypacker
texts
eye 36
favorite 0
comment 0
Describes a method of transforming coordinates from the vehicle coordinate system of a spacecraft employing a gimballess inertial measurements system into the inertial coordinate system, using only whole-number computations, with specific application to the Apollo Guidance Computer.  The motivation for this is the desire to provide a gimballess inertial measurement unit as a kind of backup or alternate approach to the Apollo guidance & navigation system's gimballed IMU.
Topics: nasa, apollo, guidance, software
Virtual AGC Project
texts
eye 36
favorite 0
comment 0
Describes certain minutiae as to how test data should be presented to be acceptable to MSC.
Topics: nasa, apollo, guidance, software, luminary, testing
Virtual AGC Project
by Don Eyles
texts
eye 36
favorite 0
comment 0
Describes an advantage of the Variable Guidance algorithm being experimented with in the off-line program ZERLINA.  This particular advantage is purely for the IBM 360 computer simulating a run of ZERLINA, and not for any purported usage in the LM, in that it requires less 360 CPU time than the regular task-scheduling algorithm in LUMINARY.
Topics: nasa, apollo, guidance, software, luminary, simulation
Virtual AGC Project
by Russell A. Larson
texts
eye 36
favorite 0
comment 0
Describes the proposed AGC software changes for LUMINARY 1C (Apollo 13), mentioning that all of the associated program change requests (PCRs) have been given an oral go-ahead, though not official approval.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by Craig Schulenberg
texts
eye 36
favorite 0
comment 0
Describes AGC software changes incorporated into LUMINARY revisions 100-105.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by Craig Schulenberg
texts
eye 35
favorite 0
comment 0
Describes AGC software changes incorporated into revisions 108-113 of the LUMINARY program.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
texts
eye 35
favorite 0
comment 0
Describes potential changes to Apollo Guidance Computer (LUMINARY) task-scheduling algorithm that would guard against program alarms of the type experienced in the Apollo 11 lunar landing.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by Allan Klumpp
texts
eye 35
favorite 0
comment 0
Describes a change to the P66 (lunar landing) program algorithm in LUMINARY 131 that provides automatic nulling of horizontal translation.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by Bruce McCoy
texts
eye 35
favorite 0
comment 0
Describes two anomalies in LUMINARY 116 discovered after  its release to Raytheon (described in the preceding memo, #107).  A workaround for one of them is given, and the other is described as "very improbable", though it was still being investigated by the DAP (Digital Auto Pilot) group.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by Dana Densmore
texts
eye 35
favorite 0
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Describes AGC software changes incorporated into LUMINARY revision 131, which replaced LUMINARY 130 as the release for Apollo 13.  Note, however, that there would still be later sub-revisions to LUMINARY 131 after this point, so it is still not the final Apollo 13 release.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by D. Moore and Don Eyles
texts
eye 34
favorite 0
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Summarizes the Level 4 test plan for LUMINARY 1B (Apollo 12).
Topics: nasa, apollo, guidance, software, luminary, testing
Virtual AGC Project
texts
eye 34
favorite 0
comment 0
Describes recent significant changes (for Apollo 11) in the descent and ascent abort programs, P70 and P71.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by Don Eyles
texts
eye 34
favorite 1
comment 0
Describes a change to the initialization of landing runs, which is supposed to take in effect in LUMINARY revisions 50 and later, due to the program-change request that is the subject of the immediately-preceding LUMINARY Memos, #44 and #43.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
texts
eye 34
favorite 0
comment 0
Describes potential modifications suggested by Bill Widnall et al. (MIT) and Ken Cox et al. (MSC), some already-approved and some not.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by Craig Schulenberg
texts
eye 34
favorite 0
comment 0
Describes the AGC software changes made in producing revisions 48-50 of the LUMINARY program.
Topics: nasa, apollo, guidance, software, luminary
Virtual AGC Project
by David Moore
texts
eye 33
favorite 0
comment 0
Test plan and results of performance tests for APS Impulsive Burn for APOLLO 14 during rendezvous.
Topics: nasa, apollo, guidance, software
Virtual AGC Project
texts
eye 33
favorite 0
comment 0
Provides more-extensive background information about the program-change request that is the subject of the immediately-preceding LUMINARY Memo, #43.
Topics: nasa, apollo, guidance, software, luminary